Yes. Ironically the non-falsetto portion (low and high notes, particularly belted in the last chorus) is much harder than the falsetto note. Most singers can do the falsetto note. But for whatever reason that impresses people more.
What does "easy" and "hard" mean? Approaching the range? Matching the pitch? Sustaining it for a time?
There are not many tasks that can be cut-and-dried as universally "easy"/"hard". "The Star Spangled Banner" is a more challenging melody because of its wide range. Also, because it's often sung solo, with minimal accompaniment, to huge crowds.
If I were singing falsetto notes, I could probably launch into the range, but could I match pitch and harmonize without AutoTune?
The Take On Me chorus has a two octave range in full voice (A2 to A4) and a falsetto at E5. I think it's harder to find people who can sing that chorus A2-A4 consistently than to find people who can squeak out a falsetto at E5. Yet the falsetto is more "impressive".
I guess I could be biased because I find it easy and not everyone finds reinforced falsetto easy. But for example Bohemian's Rhapsody famous falsetto high note is Bb5, a full half-octave higher.
